Uplink control information handling for new radio
A method of uplink control information (UCI) transmission over physical uplink control channel (PUCCH) is proposed. The UCI may include different information and being transmitted using different PUCCH formats. Under certain scenarios, the coded UCI bitstream size may not be assigned to an integer number of modulated symbols. To eliminate unnecessary processing as well as to utilize every bit in a modulated resource element, it is proposed to adjust the UCI codeword size to be a multiple of PUCCH modulation order.
1. A method comprising:
encoding uplink control information (UCI) by a user equipment (UE) in a new radio (NR) network, wherein the UCI is encoded to have a first UCI bitstream having a first UCI codeword size and a second UCI bitstream having a second UCI codeword size;
adjusting the first UCI bitstream such that the first UCI codeword size is a multiple of a modulation order;
modulating and mapping the adjusted first UCI bitstream using a modulation scheme having the modulation order onto a plurality of resource elements (REs); and
transmitting the UCI over a physical uplink control channel (PUCCH).
2. The method of claim 1 , wherein the first UCI bitstream comprises a first part of channel state information (CSI) information.
3. The method of claim 1 , wherein the second UCI bitstream comprises a second part of channel state information (CSI) information.
4. The method of claim 1 , where the first UCI bitstream and the second UCI bitstream are modulated and mapped separately and independently.
5. The method of claim 1 , wherein the first UCI codeword size and the second UCI codeword size add up a predefined total size for the PUCCH channel.
6. The method of claim 1 , wherein the adjusting of the first UCI bitstream is to ensure an integer number of modulation symbols for the first UCI bitstream.
7. The method of claim 1 , wherein the adjusting of the first UCI bitstream is to enable parallel processing between the first UCI bitstream and the second UCI bitstream.
8. The method of claim 1 , wherein the adjusting of the first UCI bitstream involves performing an upper ceiling operation.
9. The method of claim 1 , wherein the modulation scheme is Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), or Quadrature Amplitude Modulation (QAM).
10. A User Equipment (UE), comprising:
an encoder that encodes uplink control information (UCI) in a new radio (NR) network, wherein the UCI is encoded to have a first UCI bitstream having a first UCI codeword size and a second UCI bitstream having a second UCI codeword size;
a config and control circuit that adjusts the first UCI bitstream such that the first UCI codeword size is a multiple of a modulation order;
a modulator that modulates and maps the adjusted first UCI bitstream using a modulation scheme having the modulation order onto a plurality of resource elements (REs); and
a transmitter that transmits the UCI over a physical uplink control channel (PUCCH).
11. The UE of claim 10 , wherein the first UCI bitstream comprises a first part of channel state information (CSI) information.
12. The UE of claim 10 , wherein the second UCI bitstream comprises a second part of channel state information (CSI) information.
13. The UE of claim 10 , where the first UCI bitstream and the second UCI bitstream are modulated and mapped separately and independently.
14. The UE of claim 10 , wherein the first UCI codeword size and the second UCI codeword size add up a predefined total size for the PUCCH channel.
15. The UE of claim 10 , wherein the adjusting of the first UCI bitstream is to ensure an integer number of modulation symbols for the first UCI bitstream.
16. The UE of claim 10 , wherein the adjusting of the first UCI bitstream is to enable parallel processing between the first UCI bitstream and the second UCI bitstream.
17. The UE of claim 10 , wherein the adjusting of the first UCI bitstream involves performing an upper ceiling operation.
18. The UE of claim 10 , wherein the modulation scheme is Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), or Quadrature Amplitude Modulation (QAM).